Android 性能分析工具dumpsys的使用

Android提供的dumpsys工具可以用于查看感兴趣的系统服务信息与状态，手机连接电脑后可以直接命令行执行adb shell dumpsys 查看所有支持的Service但是这样输出的太多，可以通过dumpsys | grep "DUMP OF SERVICE" 仅显示主要的Service的信息

一、列出dumpsys所有支持命令

    > adb shell      $ dumpsys | grep "DUMP OF SERVICE"  

以下是在三星S3手机上的输出信息

    C:\Windows\System32>adb shell      shell@m:/ $ dumpsys | grep "DUMP OF SERVICE"      dumpsys | grep "DUMP OF SERVICE"      DUMP OF SERVICE AtCmdFwd:      DUMP OF SERVICE CustomFrequencyManagerService:      DUMP OF SERVICE DirEncryptService:      DUMP OF SERVICE Exynos.HWCService:      DUMP OF SERVICE Exynos.IPService:      DUMP OF SERVICE FMPlayer:      DUMP OF SERVICE LEDService:      DUMP OF SERVICE SecTVOutService:      DUMP OF SERVICE SurfaceFlinger:      DUMP OF SERVICE TvoutService_C:      DUMP OF SERVICE accessibility:      DUMP OF SERVICE account:      DUMP OF SERVICE activity:      DUMP OF SERVICE alarm:      DUMP OF SERVICE android.security.keystore:      DUMP OF SERVICE application_policy:      DUMP OF SERVICE appops:      DUMP OF SERVICE appwidget:      DUMP OF SERVICE audio:      DUMP OF SERVICE backup:      DUMP OF SERVICE battery:      DUMP OF SERVICE batteryinfo:      DUMP OF SERVICE bluetooth_manager:      DUMP OF SERVICE bluetooth_secure_mode_manager:      DUMP OF SERVICE clipboard:      DUMP OF SERVICE clipboardEx:      DUMP OF SERVICE commontime_management:      DUMP OF SERVICE connectivity:      DUMP OF SERVICE container_service:      DUMP OF SERVICE content:      DUMP OF SERVICE country_detector:      DUMP OF SERVICE cpuinfo:      DUMP OF SERVICE dbinfo:      DUMP OF SERVICE device_policy:      DUMP OF SERVICE devicestoragemonitor:      DUMP OF SERVICE diskstats:      DUMP OF SERVICE display:      DUMP OF SERVICE dreams:      DUMP OF SERVICE drm.drmManager:      DUMP OF SERVICE dropbox:      DUMP OF SERVICE edmnativehelper:      DUMP OF SERVICE enterprise_license_policy:      DUMP OF SERVICE enterprise_policy:      DUMP OF SERVICE entropy:      DUMP OF SERVICE gfxinfo:      DUMP OF SERVICE hardware:      DUMP OF SERVICE harmony_eas_service:      DUMP OF SERVICE input:      DUMP OF SERVICE input_method:      DUMP OF SERVICE iphonesubinfo:      DUMP OF SERVICE isms:      DUMP OF SERVICE license_log_service:      DUMP OF SERVICE location:      DUMP OF SERVICE lock_settings:      DUMP OF SERVICE log_manager_service:      DUMP OF SERVICE mdm.remotedesktop:      DUMP OF SERVICE media.audio_flinger:      DUMP OF SERVICE media.audio_policy:      DUMP OF SERVICE media.camera:      DUMP OF SERVICE media.player:      DUMP OF SERVICE meminfo:      DUMP OF SERVICE motion_recognition:      DUMP OF SERVICE mount:      DUMP OF SERVICE multiwindow:      DUMP OF SERVICE netpolicy:      DUMP OF SERVICE netstats:      DUMP OF SERVICE network_management:      DUMP OF SERVICE nfc:      DUMP OF SERVICE nfccontroller:      DUMP OF SERVICE notification:      DUMP OF SERVICE package:      DUMP OF SERVICE permission:      DUMP OF SERVICE phone:      DUMP OF SERVICE phone_restriction_policy:      DUMP OF SERVICE phoneext:      DUMP OF SERVICE power:      DUMP OF SERVICE remoteinjection:      DUMP OF SERVICE samplingprofiler:      DUMP OF SERVICE samsung.smartfaceservice:      DUMP OF SERVICE scheduling_policy:      DUMP OF SERVICE search:      DUMP OF SERVICE sec_analytics:      DUMP OF SERVICE secontroller:      DUMP OF SERVICE sensorservice:      DUMP OF SERVICE serial:      DUMP OF SERVICE servicediscovery:      DUMP OF SERVICE simphonebook:      DUMP OF SERVICE sip:      DUMP OF SERVICE statusbar:      DUMP OF SERVICE telephony.registry:      DUMP OF SERVICE textservices:      DUMP OF SERVICE tvoutservice:      DUMP OF SERVICE uimode:      DUMP OF SERVICE updatelock:      DUMP OF SERVICE usagestats:      DUMP OF SERVICE usb:      DUMP OF SERVICE user:      DUMP OF SERVICE vibrator:      DUMP OF SERVICE voip:      DUMP OF SERVICE wallpaper:      DUMP OF SERVICE wfd:      DUMP OF SERVICE wifi:      DUMP OF SERVICE wifi_policy:      DUMP OF SERVICE wifip2p:      DUMP OF SERVICE window:  

二、具体命令如何查看帮助

从上面可以看出Service非常多，“DUMP OF SERVICE”关键字后面的单词都可以直接通过 dumpsys + 单词 查看相关信息，具体每一个如何使用有一种通用的查看帮助的办法。

查看每一个命令的使用帮助，以下以meminfo 为例演示：

    shell@m:/ $ dumpsys meminfo -h      dumpsys meminfo -h      meminfo dump options: [-a] [--oom] [process]        -a: include all available information for each process.        --oom: only show processes organized by oom adj.      If [process] is specified it can be the name or      pid of a specific process to dump.  

三、一些关键命令解释

名字功能account 显示accounts信息activity 显示所有的activities的信息cpuinfo显示CPU信息window显示键盘，窗口和它们的关系wifi 显示wifi信息batteryinfo $package_name电量信息及CPU 使用时长package packagename获取安装包信息usagestats每个界面启动的时间statusbar显示状态栏相关的信息meminfo

内存信息（meminfo $package_name or $pid 

使用程序的包名或者进程id显示内存信息）

diskstats 磁盘相关信息battery 电池信息alarm显示Alarm信息  

activity  - 使用adb shell dumpsys检测Android的Activity任务栈

window - 通过adb shell dumpsys命令获取当前应用的component

statusbar - 找出广告通知属于哪个应用

    dumpsys statusbar | grep notification=Notification 

四、参考资料

Dumpsys （官方文档）
How to discover memory usage of my application in Android
android中dumpsys函数介绍与使用 （代码分析）
来自：http://blog.csdn.net/androiddevelop/article/details/37689339